You can occasionally find the backup at The-Eye Public Books, though hardware issues may affect availability.
Before it became a sub-directory on larger archiving hubs, was a standalone open directory dedicated entirely to tabletop RPGs. It operated as an unindexed, raw file repository where users could browse simple folders organized by game systems, publishers, and editions. rpgremuz the eye link
The most challenging part is "." It is not a common word and is almost certainly a username or a unique, coined name. A search for "remuz" reveals a scattered digital footprint across different platforms and contexts, suggesting it's a unique identifier used by several individuals online: You can occasionally find the backup at The-Eye